He will actually be serving three concurrent five-year sentences.

实际上他要同期服3个5年的刑期。

《柯林斯英汉双解大词典》

The verb you with concurrent sentence element may form sentences of concurrent sentence element which is indefinite in this case.

动词“有”可以带兼语构成兼语句，这种“有”字句中的兼语一般是不定指的。

youdao

The judge sentenced Mr Gallant concurrent life sentences.

法官判处格兰特数次终身监禁，同期执行。

youdao

Three judges ruled the original sentences should have been consecutive and not concurrent - and replaced them with "just and proportionate" sentences.

BBC: Judges increase fraudster sentences

Goodwin will also serve concurrent 18-month and 12-month sentences for two burglaries.

BBC: Dean Goodwin